Announcement (2017-05-07): www.ruby-forum.com is now read-only since I
unfortunately do not have the time to support and maintain the forum any
more. Please see rubyonrails.org/community and ruby-lang.org/en/community
for other Rails- und Ruby-related community platforms.

Intervals is a library implementing an interval system in the extended
real set that is closed under arithmetic operations. Correct rounding
ensures that the operations are inclusion-wise monotonic.
Intervals pre-1 is an experimental release that has has been tested on
Mac Os X/powerpc and on linux/intel. For the C package implementing
rounding-mode control to compile, a C99-compliant compiler is needed
(or at least one that knows about fenv.h).
The project homepage is at http://intervals.rubyforge.org/ and the
library can be downloaded from http://rubyforge.org/projects/intervals/
Feedback and suggestions are welcome!
Best regards,
Stefano Taschini